CVE-2024-30593
📋 TL;DR
This CVE describes a stack overflow vulnerability in Tenda FH1202 routers that allows remote attackers to execute arbitrary code by sending specially crafted requests to the deviceName parameter. The vulnerability affects Tenda FH1202 routers running vulnerable firmware versions, potentially compromising the entire device and network.
💻 Affected Systems
- Tenda FH1202
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover leading to persistent backdoor installation, credential theft, network pivoting, and botnet recruitment.
Likely Case
Remote code execution allowing attackers to modify router settings, intercept traffic, or launch attacks against internal network devices.
If Mitigated
Limited impact if device is behind firewall with restricted WAN access and strong network segmentation.
🎯 Exploit Status
Public GitHub repository contains detailed analysis and likely exploit code. Stack overflow vulnerabilities in embedded devices are commonly weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: Yes
Instructions:
1. Check Tenda website for firmware updates 2. Download latest firmware 3. Access router admin panel 4. Navigate to firmware upgrade section 5. Upload and apply new firmware 6. Reboot router
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to router web interface
Network Segmentation
allIsolate router management interface to trusted network segment
🧯 If You Can't Patch
- Place router behind firewall with strict inbound rules blocking all WAN access to management ports
- Implement network monitoring for unusual traffic patterns or exploit attempts targeting the router
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via admin panel at 192.168.0.1 or 192.168.1.1, navigate to System Status or About pageCheck Version:
curl -s http://router-ip/goform/getStatus | grep version or check web interfaceVerify Fix Applied:
Verify firmware version has been updated to a version newer than v1.2.0.14(408)📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to formSetDeviceName endpoint
- Multiple failed login attempts followed by deviceName parameter manipulation
Network Indicators:
- Unusual outbound connections from router
- Traffic patterns suggesting router compromise
SIEM Query:
source="router_logs" AND (uri="/goform/setDeviceName" OR uri="/goform/formSetDeviceName") AND (param="deviceName" AND length>100)